EXERCISE IS MY THERAPY as well! My suggestions:
1) Check your shoes (not in yoga obviously). Wear them around the house and see if they trigger anything. My sneakers because of the roughness of the sole effected me. I also can not wear socks in my sneakers (sometimes if I turn them inside out so the smooth side is next to my feet it works.) I had tried dance class and I realized weeks after I had given it up that my shoes were the culprit. Exact same symptoms you are describing. It's still is a challenge to take the class, but nowhere like it had been with those sneakers.
2) Yoga was horrible for me as I have spinal issues and a cyst in my hip that were being inflamed by the weight bearing poses (warrior, back extension poses, etc.) I went to a muscular skeleton Dr who ordered various tests and I now know yoga is not for me and I also know what to avoid.

My neurologist told me it is ok if exercise triggers symptoms as long as it doesn't extend to the next day. I don't know if it applies to the general population or if it was just in my case but I've read similar things on this forum.